Solve the Problem $5.1 \times 10 ^ { 8 } \mathrm { yr }$

question 343

Multiple Choice

Solve the problem.
-The half-life of an element is $5.1 \times 10 ^ { 8 } \mathrm { yr }$ . How long does it take a sample of the element to decay to $\frac { 2 } { 5 }$ of its original mass? (Express results in scientific notation, rounded to the nearest hundredth.)

• A) \(5.80 \times 10 ^ { 8 } \mathrm { yr }\)
• B) \(6.74 \times 10 ^ { 8 } \mathrm { yr }\)
• C) \(1.14 \times 10 ^ { 8 } \mathrm { yr }\)
• D) \(3.24 \times 10 ^ { 8 } \mathrm { yr }\)

Recognize the use of observation as a research method and its applications.

Identify the use of in-depth interviews and focus groups for detailed understanding of consumer behavior.

Understand the design and application of structured and unstructured questions in research.

Grasp the concept of data mining and its usage in analyzing customer patterns and behaviors.

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